--- In Jim Jackson <> wrote:
> On Fri, 22 Jan 2010, carreras_marcos wrote:
>> Good morning folks!, I need to drive two relays
>> connected to both DIOs at my TS-7200. Due to
>> the sink at these lines are 4mA ( 3,3V ), will
>> need to drive them by using optocouplers.
> Why do you need an opto coupler? A transistor
> buffer would probably be all you need.
I wondered as well why a 2N2222 could not be used instead of an opto. Maybe
isolation is required for the application but it didn't sound like it.
2N2222's are inexpensive! Just pull them off of any board lying in the scrap
pile. }:-}
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